EP0501733B1 - Exhaust emission control device - Google Patents

Exhaust emission control device Download PDF

Info

Publication number
EP0501733B1
EP0501733B1 EP92301544A EP92301544A EP0501733B1 EP 0501733 B1 EP0501733 B1 EP 0501733B1 EP 92301544 A EP92301544 A EP 92301544A EP 92301544 A EP92301544 A EP 92301544A EP 0501733 B1 EP0501733 B1 EP 0501733B1
Authority
EP
European Patent Office
Prior art keywords
filter elements
side plates
emission control
control device
members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92301544A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0501733A1 (en
Inventor
Yasuo Akitsu
Hideyuki Masaki
Hiroyuki Okahara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Publication of EP0501733A1 publication Critical patent/EP0501733A1/en
Application granted granted Critical
Publication of EP0501733B1 publication Critical patent/EP0501733B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0233—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • F01N13/017—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the present invention relates to an exhaust emission control device for purifying various exhaust gases discharged from internal combustion engines or diesel engines of automotive vehicles, industrial machines or various factory plants.
  • Japanese Patent Laid-open Publication No. 1-159408 there is disclosed one of such exhaust emission control devices which includes a casing arranged above an electric furnace and a ceramic filter element disposed within the casing to collect fine particles from exhaust gases introduced into an inlet opening of the casing and to cause the collected fine particles fall into the electric furnace.
  • the ceramic filter element has a thin-walled cellular or honeycomb structure formed with a plurality of axially extending passages which are separated from each other by thin partition walls and closed at opposite ends thereof in a checked pattern.
  • EP 393729 shows a filter having an array of elements, each element 4 having four elongate cavities 7 separated by internal walls 5.
  • the array of elements is support by a grid 12.
  • EP 89127 shows a filter having an array of passages apparently formed from a single block.
  • an exhaust emission control device as set out in claim 1.
  • Fig. 1 of the drawings there is illustrated an exhaust emission control system for purifying exhaust gases discharged from a diesel engine installed in a factory plant.
  • the emission control system is composed of plural pairs of exhaust emission control devices M arranged in parallel in a fore-and-aft direction. Arranged between the plural pairs of emission control devices M are a supply duct 11 for introducing exhaust gases from the diesel engine into the respective emission control devices M and a discharge duct 12 for discharging purified gases from the respective emission control devices M.
  • the emission control devices M each include an upright housing 20 of square in cross-section mounted on a frame construction, an electric furnace 30 arranged under the upright housing 20, and a filter assembly 40 housed within the upright housing 20 and a reverse washing mechanism 50.
  • the upright housing 20 is composed of a housing body 21 and a pyramidal hopper 22 assembled with the bottom portion of housing body 21 and located above the electric furnace 30.
  • the hopper 22 has an inlet port 22a formed at its peripheral wall and connected in an air-tight manner to the supply duct 11.
  • the housing body 21 has an outlet port 21a formed at its peripheral wall and connected in an air-tight manner to the discharge duct 12.
  • the hopper 22 is connected at its lower end to an upper end wall of a furnace body 31 by means of a connecting pipe.
  • an electric heater 32 Arranged within the furnace body 31 is an electric heater 32 for burning fine particles falling thereon from the hopper 22.
  • the reverse washing mechanism 50 has an air supply pipe 51 located above the filter assembly 40.
  • a steam supply pipe 23 is inserted into the hopper 22 and connected to a jet nozzle 24 mounted to a perforated bottom plate 21b of housing body 21.
  • the filter assembly 40 is composed of sixteen ceramic filter elements 41 aligned in parallel and clamped by a pair of side plates 42 and 43.
  • the clamped filter elements 41 are supported by a support frame 45 at their bottom ends.
  • the number of ceramic filter elements 41 has been determined in consideration with prevention of gas leakage among the filter elements 41 and allowable space in the housing body 21.
  • the ceramic filter elements 41 each are made of porous ceramic material and have a thin-walled cellular or honeycomb structure of square in cross-section formed with a plurality of axially extending passages 41a, 41b separated from each other by thin partition walls 41c. As shown in Figs.
  • a first group of filter passages 41a are closes at their upper ends in a checked pattern and opened downwardly at their lower ends to introduce the exhaust gases therein, while a second group of filter passages 41b are closed at their lower ends in a checked pattern and opened upwardly at their upper ends to discharge purified gases therefrom.
  • the thin partition walls 41c of element 41 each act as a filter to collect fine particles from the exhaust gases permeating therethrough.
  • the side plates 42, 43 each are formed in an L-letter shape in cross-section to be longer at their one side portions 42a, 43a than the whole side width of four filter elements 41 aligned in a lateral direction and to be approximately the same at their other side portions 42b, 43b as the whole side width of four filter elements 41 aligned in a fore-and-aft direction.
  • the side plates 42, 43 are provided with brackets 42c, 42d, 43c, 43d respectively secured to their side portions 42a, 42b, 43a, 43b.
  • the side plates 42, 43 are formed higher in a predetermined length than the filter elements 41 as shown in Fig. 2.
  • the filter elements 41 each are enclosed by sealing members 46a, 46b at their upper and lower portions and clamped by the side plates 42, 43.
  • the sealing members 46a, 46b each are made of ceramic fiber and adhered to the upper and lower portions of the respective filter elements 41 by means of inorganic adhesive.
  • the sealing members 46a, 46b each are coated with a surface hardening agent at their opposite ends.
  • the sealing members 46a and 46b are interposed among the filter elements 41 and between the respective filter elements 41 and side plates 42, 43 at the upper and lower portions of the filter assembly 40.
  • the upper support frame 44 is composed of a square framework member 44a formed to correspond with the top edge of the filter assembly 40 and a plurality of crossbeam members 44b integrally assembled with the framework member 44a in the form of latticework to correspond with each top edge of the filter elements 41.
  • the lower support frame 45 is composed of a square framework member 45a formed to correspond with the bottom edge of the filter assembly 40 and a plurality of crossbeam members 45b integrally assembled with the framework member 45a in the form of latticework to correspond with each bottom edge of the filter elements 41.
  • the upper supprt frame 44 further includes a plurality of U-letter shaped support members 44c secured to each intersected portion of the framework member 44a and crossbeam members 44b.
  • the upper support frame 44 is fixedly coupled within the upper end portion of the integrally assembled side plates 42, 43 in such a manner that the support members 44c are positioned above the respective top end corners of filter elements 41 to restrict upward movement of the filter elements 41.
  • the framework member 44a and crossbeam members 44b act to ensure the support strength of the filter assembly 40 and to prevent outward flow of the compressed air supplied therein in reverse washing operation.
  • the lower support frame 45 includes a plurality of U-letter shaped support members 45c secured to each intersected portion of the framework member 45a and crossbeam members 45b for engagement with the respective bottom end corners of filter elements 41.
  • the lower support frame 44 is fixedly coupled within the bottom end portion of the integrally assembled side plates 42, 43 in such a manner that the support members 45c are engaged with the respective bottom end corners of filter elements 41 to support the filter elements 41 thereon.
  • the filter assembly 40 is detachably mounted on the perforated bottom plate 21b of housing body 21 and fixed at its upper end to the housing body 21 by means of a bracket 21c.
  • the air supply pipe 51 extended into the housing body 21 has a plurality of outlet pipes 52 which are extended into respective opening spaces encloses by the crossbeam members 44b and faced to the respective top ends of filter elements 41.
  • exhaust gases discharged from the diesel engine are supplied into the hopper 22 through the supply duct 11 and introduced into the inlet passages 41a of filter elements 41.
  • the thin partition walls 41c of filter elements 41 act to collect fine particles from the exhaust gases permeating therethrough into the outlet passages 41b of filter.
  • the purified gases are discharged from the outlet passages 41b of filter elements 41 into the discharge duct 12, while the fine particles are accumulated on the surfaces of partition walls 41c.
  • an electromagnetic valve 53 of the reverse washing mechanism 50 is opened under control of an electric control apparatus (not shown) to supply compressed air from a pneumatic pressure source PS into the air supply pipe 51.
  • the compressed air spurts out of the outlet pipes 52 and flows into the outlet passages 41b of filter elements 41 to flow into the inlet passages 41a through the partition walls 41c.
  • the accumulated fine particles are separated from the partition walls 41c and fall into the electric furnace 30.
  • inflammable particles are burned and discharged with nonflammable particles outwardly.
  • the exhaust emission control device M is characterized in that the plurality of filter elements 41 assembled as a single unit are disposed within a limited space in the housing body 21 to provide a higher gas purifying performance than that of a conventional emission control device with a single filter element. Since the filter elements 41 are retained in place by clamping of the side plates 42, 43, a sufficient support strength of filter elements 41 can be obtained in a compact construction. Thus, the filter assembly 40 can be mounted within the housing body 21 in a stable condition to maintain the higher gas purifying performance for a long period of time without causing any damage of filter elements 41. In addition, the support of the filter assembly 40 by means of the upper and lower support frame 44 and 45 is effective to more stably retain the filter assembly 40 against .pa fluctuating stress applied thereto within the housing body 21.
  • the upper and lower sealing members 46a, 46b interposed among the filter elements 41 and side plates 42, 43 are effective to prevent leakage of exhaust gases from the filter elements 41 and to avoid the occurence of damage of filter elements 41 during a clamping process thereof.
  • the sealing members 46a, 46b are also useful to absorb thermal expansion of the metal fittings for the filter assembly 40 and to protect the filter elements 41 from thermal stress applied thereto.
  • the filter elements 41 are supported a their respective bottom end corners by engagement with the U-letter shaped support members 45c respectively secured to the intersected portions of the lower crossbeam members 45b.
  • the support members 45c are useful to eliminate stress concentration in the filter elements 41.
  • the upper support members 44c are slightly spaced from the top ends of filter elements 41 in a vertical direction to absorb irregularity of the filter elements in vertical size.
  • the upper support members 44c are resiliently engaged with the top end corners of filter elements 41 through appropriate resilient members to more stably retain the filter elements 41 in place.
  • the inlet and outlet passages 41a, 41b of the respective filter elements 41 are closes at portions facing the support members 44c, 45c to avoid damage of the filter elements 41 at their supported portions.
  • the U-letter shaped lower support members 45c are spaced from the crossbeam members 45b to permit the flow of exhaust gases passing thereacross. This is useful to uniformly introduce the exhaust gases into the respective filter elements 41.
  • the framework member 44a and crossbeam members 44b of upper support frame 44 are formed to have a predetermined vertical width for stably introducing the compressed air from the air supply pipe 51 into the respective filter elements 41 in reverse washing operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP92301544A 1991-02-25 1992-02-25 Exhaust emission control device Expired - Lifetime EP0501733B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3053780A JPH0661416B2 (ja) 1991-02-25 1991-02-25 排ガス処理装置
JP53780/91 1991-02-25

Publications (2)

Publication Number Publication Date
EP0501733A1 EP0501733A1 (en) 1992-09-02
EP0501733B1 true EP0501733B1 (en) 1995-01-04

Family

ID=12952329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92301544A Expired - Lifetime EP0501733B1 (en) 1991-02-25 1992-02-25 Exhaust emission control device

Country Status (5)

Country Link
US (1) US5228892A (ja)
EP (1) EP0501733B1 (ja)
JP (1) JPH0661416B2 (ja)
CA (1) CA2061745C (ja)
DE (1) DE69201065T2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8080082B2 (en) 1999-09-29 2011-12-20 Ibiden Co., Ltd. Honeycomb filter and method for producing the honeycomb filter

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2744180B2 (ja) * 1992-11-17 1998-04-28 日本碍子株式会社 高温排ガス用フィルタ装置のダストシール構造
JP2718615B2 (ja) * 1993-03-12 1998-02-25 日本碍子株式会社 高温ガス用集塵装置
JP3110247B2 (ja) * 1993-06-28 2000-11-20 日本碍子株式会社 除塵装置
US5643539A (en) * 1994-03-04 1997-07-01 Salem Engelhard Regenerative incineration system
JP3066247B2 (ja) * 1994-05-31 2000-07-17 日本碍子株式会社 集塵装置
JPH07332064A (ja) * 1994-06-10 1995-12-19 Ngk Insulators Ltd 排ガスフィルタおよび排ガス処理装置
JPH09206536A (ja) 1996-02-07 1997-08-12 Ngk Insulators Ltd 集塵装置におけるフィルタの逆洗方法
US6213979B1 (en) * 1997-05-29 2001-04-10 Venetec International, Inc. Medical line anchoring system
JP2006035224A (ja) * 1998-07-28 2006-02-09 Ibiden Co Ltd セラミック構造体
US6989045B2 (en) * 2002-04-12 2006-01-24 Illinois Valley Holding Co. Apparatus and method for filtering particulate and reducing NOx emissions
US7992382B2 (en) * 2003-08-01 2011-08-09 Illinois Valley Holding Company Particulate trap system and method
US8158711B2 (en) * 2003-08-25 2012-04-17 Dow Global Technologies Llc Aqueous dispersion, its production method, and its use
JP4434076B2 (ja) † 2005-05-23 2010-03-17 日本碍子株式会社 ハニカム構造体
US20110170647A1 (en) * 2006-09-27 2011-07-14 Emc2 Method and apparatus for controlling charged particles
US20090293464A1 (en) * 2008-05-30 2009-12-03 Caterpillar Inc. Assembly and method of assembly for exhaust treatment
US8142537B2 (en) * 2009-03-17 2012-03-27 Mann + Hummel Gmbh Support grid and alignment appartus for a filter element and housing
US20110030355A1 (en) * 2009-08-10 2011-02-10 Vconverter Company Catalytic Converter and Process of Manufacture
KR101335308B1 (ko) * 2012-11-27 2013-12-02 주식회사 파나시아 다수 엔진을 위한 공동 탈질시스템
DE102014203618A1 (de) * 2014-02-27 2015-08-27 Johnson Matthey Catalysts (Germany) Gmbh Katalysatormodul, Aufnahmeeinheit für ein derartiges Katalysatormodul sowie Verfahren zum Herstellen eines solchen Katalysatormoduls
DE102014203617A1 (de) * 2014-02-27 2015-08-27 Johnson Matthey Catalysts (Germany) Gmbh Katalysatormodul, Aufnahmeeinheit für ein solches Katalysatormodul sowie Verfahren zum Herstellen eines solchen Katalysatormoduls
DK2993323T3 (en) * 2014-09-04 2017-10-16 3M Innovative Properties Co MOUNTING FOR A POLLUTION CONTROL OR CHEMICAL REACTOR
DE102015219827A1 (de) 2015-03-30 2016-10-06 Man Diesel & Turbo Se Katalysatoreinheit und Abgaskatalysator

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556042U (ja) * 1978-06-27 1980-01-16
JPS5684621A (en) * 1979-12-13 1981-07-10 Mitsubishi Heavy Ind Ltd Catalyst packaged to rectangular parallelepiped
US4419108A (en) * 1982-02-22 1983-12-06 Corning Glass Works Filter apparatus and method of filtering
DE3512102A1 (de) * 1985-03-29 1986-10-09 Mannesmann AG, 4000 Düsseldorf Tragrostboden fuer einen katalysatorkorb
DE8602600U1 (de) * 1986-02-01 1986-03-13 Degussa Ag, 6000 Frankfurt Vorrichtung zur Halterung von Monolithkatalysatoren
DE8605649U1 (de) * 1986-03-01 1986-04-17 Degussa Ag, 6000 Frankfurt Vorrichtung zur Halterung von Monolithkatalysatoren
DE3608371A1 (de) * 1986-03-13 1987-09-17 Fev Forsch Energietech Verbr Gehaeuse fuer abgasnachbehandlungssysteme, insbesondere fuer partikelfiltersysteme
IT1196822B (it) * 1986-12-05 1988-11-25 Iveco Fiat Filtro autorigenerante per i gas di scarico di un motore a combustione interna
JPH01159408A (ja) * 1987-09-25 1989-06-22 Asahi Glass Co Ltd ディーゼルエンジンの排気ガスの処理装置および処理方法
US5065574A (en) * 1990-05-29 1991-11-19 Caterpillar Inc. Particulate trap regeneration apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8080082B2 (en) 1999-09-29 2011-12-20 Ibiden Co., Ltd. Honeycomb filter and method for producing the honeycomb filter
US8083826B2 (en) 1999-09-29 2011-12-27 Ibiden Co., Ltd. Honeycomb filter and method for producing the honeycomb filter

Also Published As

Publication number Publication date
CA2061745C (en) 1997-09-09
DE69201065D1 (de) 1995-02-16
CA2061745A1 (en) 1992-08-26
US5228892A (en) 1993-07-20
JPH04271806A (ja) 1992-09-28
DE69201065T2 (de) 1995-07-06
EP0501733A1 (en) 1992-09-02
JPH0661416B2 (ja) 1994-08-17

Similar Documents

Publication Publication Date Title
EP0501733B1 (en) Exhaust emission control device
EP0698410B1 (en) Support construction of filter element in dust collecting apparatus
US5853438A (en) Filter regenerating mechanism for exhaust black smoke removing system
US5531798A (en) Eliminating ash bridging in ceramic filters
JPS62225221A (ja) パテイキユレ−トトラツプ
US5593471A (en) Dust collecting apparatus
JP3752370B2 (ja) 高温排ガス処理用のセラミック製フィルタ装置
EP0620034B1 (en) Dust collecting apparatus for high-temperature gas
JP2614390B2 (ja) 排ガス処理装置
RU2147915C1 (ru) Регенерируемый фильтр для тонкой очистки газов от пыли
JP4005767B2 (ja) 集塵機
KR20110066280A (ko) 세라믹 필터를 이용한 계단식 집진장치
JPH0758046B2 (ja) 排ガス処理装置
JP3257950B2 (ja) ディーゼル機関用逆洗再生式排気黒煙除去装置
JP2818720B2 (ja) 排ガス用セラミックフィルタ
SU1076134A1 (ru) Зернистый фильтр
JPH04354506A (ja) ガス処理装置
JPH0635814B2 (ja) 排ガス処理装置の逆洗浄機構
JPH05231126A (ja) フィルタモジュールおよびディーゼル機関用パティキュレートトラップ
SU422430A1 (ru) Керамический фильтр
KR100291044B1 (ko) 자동차매연여과장치
KR200279668Y1 (ko) 필터링용세라믹담지모체
EP0704607A2 (en) A securing means of ceramic monoliths
JPH04267913A (ja) 排ガス処理装置
KR19980014035A (ko) 자동차용 매연 정화 장치

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT

17P Request for examination filed

Effective date: 19921008

17Q First examination report despatched

Effective date: 19930811

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT

REF Corresponds to:

Ref document number: 69201065

Country of ref document: DE

Date of ref document: 19950216

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030214

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030219

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030224

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20030226

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040228

BERE Be: lapsed

Owner name: *NGK INSULATORS LTD

Effective date: 20040228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040901

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041029

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050225